At fifty-three, Maggie Harris has a good marriage and two mostly happy children. Perpetually anxious, shes also accumulated a list of semi-reasonable fears: falling air conditioners, the IRS, identity theft, skydiving, and airbag recalls. But never once did Maggie worry that her husband of nearly thirty years would leave her. On the day Adam walks out the door, everything that makes Maggie secure goes with him. Only then does she realize that while...